Home / A Grade Fused Silica Sand and Powder
A Grade Fused Silica Sand and Powder
For buyers who need fused silica inside a defined chemical window and a stated particle size. Send the target and we confirm the available A grade and the COA.
Chemical composition
| Item | A Grade | B Grade |
|---|---|---|
| SiO₂ | 99.9% min | 99.8% min grains; 99.7% min powder |
| Fe₂O₃ | ≤ 100 ppm | ≤ 200 ppm |
| Al₂O₃ | ≤ 200 ppm | ≤ 200 ppm |
| Na₂O | ≤ 100 ppm | ≤ 200 ppm |
| K₂O | ≤ 100 ppm | ≤ 100 ppm |
| MgO | ≤ 200 ppm | ≤ 200 ppm |
| CaO | ≤ 100 ppm | ≤ 100 ppm |
| Magnetic impurities | ≤ 50 ppm | ≤ 100 ppm |
These are typical values from the product data. Chemical composition, particle size and other limits are confirmed on the COA and the quotation before the order.
Physical properties
| Item | Value |
|---|---|
| Bulk density | 2.18–2.20 g/cm³ |
| pH | ~6 |
| Melting temperature | 1750°C |
| Softening temperature | 1650°C |
| Linear thermal expansion (20–700°C) | 5 × 10⁻⁷ /°C |
| Amorphous glass | > 99% |
| Cristobalite / crystalline phase | < 1% |
Available particle sizes
ISO sizes
0–1 mm1–3 mm3–5 mm3–6 mm0.1–0.2 mm0.2–0.5 mm0.5–1 mm
ASTM / mesh sizes
4×10 mesh10×20 mesh20×50 mesh50×100 mesh100F140F200 mesh200F325F
Several standard sizes are available, and particle size can be made to the customer’s requirement.
Packaging and trial orders
- 25 kg bags
- 25 kg bags on pallets
- Jumbo bags / big bags, 1000 kg or 1250 kg
Sample availability, minimum quantity, packing and freight are confirmed for your destination.
Inquiries for trial orders of about 100–500 kg are welcome, once grade, specification and shipping are confirmed.
What to include in your inquiry
- Grade: A grade or B grade
- Form: sand, grains or powder
- Target particle size or mesh range
- SiO₂ target and impurity limits, if you have them
- Application and any technical specification
- Estimated quantity and destination country